API Test Engineer

API Test EngineerWe are looking for a skilled API Test Engineer to design, develop, and execute API testing strategies to ensure the quality, reliability, performance, and security of RESTful and SOAP web services. The ideal candidate should have experience with API automation, manual API testing, database validation, CI/CD integration, and testing tools such as Postman and REST Assured.Design and execute API test cases for REST and SOAP services.Develop and maintain API automation frameworks.Validate API functionality, performance, reliability, and security.Perform request and response validation using JSON and XML.Test CRUD operations (GET, POST, PUT, PATCH, DELETE).Verify authentication and authorization mechanisms (OAuth 2.0, JWT, API Keys).Perform database validation to ensure data integrity.Identify, log, and track defects using defect management tools.Integrate API automation into CI/CD pipelines.Collaborate with developers, QA engineers, and DevOps teams.Create API test plans, reports, and documentation.Participate in Agile/Scrum ceremonies.REST API TestingSOAP API TestingGraphQL API TestingWeb Services TestingJSON & XML Validation ProtocolCRUD OperationsAPI VersioningREST Assured (Java)PostmanNewmanKarate FrameworkSoapUIInsomniaJava (Preferred)PythonJavaScriptC#Object-Oriented Programming (OOP)Exception HandlingCollectionsFile HandlingJSON ParsingOAuth 2.0JWT (JSON Web Token)API Key AuthenticationBasic AuthenticationBearer Token Authentication MethodsGETPOSTPUTPATCHDELETE Status CodesRequest HeadersQuery ParametersPath ParametersRequest BodyResponse ValidationCookiesSessionsSQLMySQLPostgreSQLOracleSQL ServerJoinsStored ProceduresViewsCRUD OperationsData ValidationJenkinsGitGitHubGitLabAzure DevOpsMavenGradleDockerExecute API automation in CI/CD pipelines.Generate execution reports.Schedule automated regression runs.JMeterLoadRunnerAPI Load TestingStress TestingSpike TestingOWASP API SecuritySQL Injection TestingAuthentication TestingAuthorization TestingRate Limiting ValidationAPI Vulnerability TestingJIRAAzure DevOpsBugzillaALM/Quality CenterAllure ReportsExtent ReportsNewman ReportsBachelor's degree in Computer Science, Engineering, or a related field.2–6+ years of experience in API testing and automation.Hands-on experience with REST Assured or Postman automation.Good understanding of SDLC, STLC, and Agile methodologies.Experience working with microservices architecture.Selenium WebDriverPlaywrightCypressKafka TestingRabbitMQ TestingDocker & KubernetesCloud platforms (AWS, Azure, GCP)Contract Testing (Pact)Mock Servers (WireMock)Develop REST Assured automation for microservices APIs.Validate request and response payloads against API contracts.Perform end-to-end API testing integrated with UI automation.Execute regression API suites in Jenkins.Validate backend database updates after API execution.Perform API performance testing using JMeter.Secure APIs by validating authentication and authorization mechanisms.REST Assured – API automationJava – Programming languageTestNG/JUnit – Test executionMaven – Dependency managementJackson/Gson – JSON serialization/deserializationLog4j – LoggingExtent Reports/Allure – ReportingJenkins – CI/CDGit – Version controlJenkins triggers the build.Maven downloads dependencies.TestNG executes API test cases.REST Assured sends requests.Responses are validated against expected results.Database validation is performed (if required).Reports are generated and published.Results are shared with the QA team.What is an API?What is the difference between REST and SOAP?Explain methods (GET, POST, PUT, PATCH, DELETE).What are status codes?What is idempotency in REST APIs?How do you automate APIs using REST Assured?How do you validate JSON responses?How do you extract values from API responses?How do you perform parameterization in REST Assured?Explain OAuth 2.0.What is JWT?How do you pass authentication tokens in API requests?How do you validate database changes after an API call?Explain SQL joins used during API testing.How do you integrate API tests into Jenkins?How do you execute Postman collections using Newman?How do you test an API when documentation is unavailable?How would you validate an API returning intermittent 500 errors?How do you test pagination and filtering APIs?How do you handle dynamic values such as tokens or session IDs?REST API TestingREST AssuredPostmanNewmanSoapUIKarate FrameworkJavaJSONXMLOAuth 2.0JWTSQLMySQLOraclePostgreSQLJenkinsMavenGitDockerJIRATestNGJMeterAPI AutomationMicroservices TestingCI/CDAgile Testing